Radiator air valve



Au 14, 1923. v 11,464,756

C. FEUSER ET AL RADIATOR AIR VALVE Filed Marbh 5, 1921 BY ATTORNEY Mi/2' INVENTORS.

i curves temperature and Patented Aug. 14, 1923,

CONRAD FEUSEB AND ARTHUR c. or snoorrrintn, JERSEY; snip 'ARTHUR C. FETJSEB ASSIGNGR TO EAID GENE-3RD EEUSEB.

RADIATOR AIR VALVE.

Applicationfiled Marclifi, 1921. Serial 1%. 4249,9551

T 0 all til/2 0m it may concern:

Be it known that we, CONRAD Fnosnn and ARTHUR C. Fnnsnn, cit zens of the United tates, residing in the town of Bloomfield,

county of Essex, and State of New Jersey, have invented a new and useful Improve set forth in In theprior application of Conradl euser '(one of the parties hereto), Serial No. 359; 433, filed February 17, 1920, an improved vdevice is disclosed for-preventing the distortion, under the frequent changes of temperature, of the thermostatic element of the well-known radiator air valve. We have.

tound 'the meanstherein set forth to be quite efiectiveduring the early life of the valve. Howeventhe continued heating and cooling have the effect of so warping and distorting the element, entirely aside from the endwise pressure to which it is subjected in use, as to render it useless for the purpose intended in a comparativelyshort time.

The. object of our present invention is to provide the air valve with an'improved torm of thermostatic element'which is ettective under all conditions to which the valve'niay be subjected Without the liability to distortion, together with means for positively unseating the valve as and when the pressure in the heating system falls below a. predetermined point.

Another object air valve with a thermostatic element of such a character that such element may be assembled with the valve stem and float as well as the unseating "means as a single unitary structure, so that'it may be removed from the valve case without the separation of its several parts.

In the accompanying drawings forming part of this specification, V

Fig. 1 illustrates a form of radiator valve in commonuse.

Fig. 2 is avertical section of the same,

I with the improved thermostatic element substituted for the usual carbon element.

Fig. 3 is an enlarged view of the thermostatic element detached from the valve case as an assembled unit.

Fig. 4 is an end view and Fig. 5 is a side 7 element.

is to provide a radiator.

view of a pair of juxtaposed members which form the thermostatic element.

big. 6 is a plan view of one of said members.

Fig. 1s a plan view of the supporting disk or diaphragm. w

Big. 8 1s a side of the valve unseating The valve comprises the base 1, and the case or shell 2, fitted together by screwing the parts together as shown. The base has the screw threaded spud bv which the i lve is secured to the coil oli a steam rat 121501. The upper end of the case is do neshaped and provided with an externally threaded head 4-, to receive the cover cap 6,, and forms the valve seat Instead oithe usual cover cap, we have shown the commercial form of the check valve cap of the patent to Conrad Feuser, No. 1.3%,439. dated May 18, 1920. The purpose of the cap 6 is to prevent the return o f air to the heating system when once excluded therefrom by the generation of steam, making what is known a vacuum system. k

Supported upon the ledge 7 of the base 1 is a disk or diaphragm 8, which firmly held in place by the lower edge of the case 2. The disk is centrally slotted as at 9, and i latter, free communication is had between the upper and lower chambers of the valve case. The valve stem 11, flatted upon two sides, is inserted through the slot 9, with the unseating element 12, the washer 13 and pin 14 in place as shown, to hold the parts together. Above the disk 8 and upon the stem 11, the series of thermostatic members .16 arranged as shown between the fixed collarlfi and the disk 8. The pairs of members 16, 16 may be separated by the washers 16, so as to expose a greater portion of their surfaces to the steam as it enters the interior of the valve The stem is coned at its upper end to form the valve17, for co-operation with the seat 5; The usual float 18 may be attached, to the stem, to prevent flooding of the case y condensed steam.

The members 12 and 16 are each composed of a special thermostatic metal, or rather of two metals in sheet form, and united to-- The property of the composite strip is such that a straight strip when subjected to temperature higher than normal will be curved,

with the brass upon the convex side; at temperatures lower than normal, it will be curved in the opposite direction. We have found that themembers 12 and 16 are mostefiicient when bent into rectangular form as shown, with their ends bent toward each other, so that a pair of such members will have their ends bearing upon each other. Since the members lo are to be utilized to close the valve 17 upon the seat 5 upon a rise of temperature in the heating system, the brass face of the metal strips of which they are made is upon the outside, so that upon evpanding with a rise of temperature, they will belly outwardly, as shown in Fig. 5. The members 12 are formed with the brass face upon the inside, so that the rise of temperature will change their shape so that 1 their sides will belly inwardly, as shown in Fig. 8. Since the members 16 areloosely confined upon'the'stem 11, their contraction to normal shape would not be eti'ective to unseat the valve 17, if for any reason it Vture 1n sa d case to positively unseat sa d should become set or stuck upon the seat 5. The members 12, being just oppositely formed, will serve by their expansion to positively unseat the valve, as and when the members 16 contract under a fall of temperature.

The valve stem 11, the thermostatic ele ments 12 and 16 and the disk 8, together with the float 18, are assembled as a single unitary structure, which may be removed from the valve case for adjustment and .repair by simply unscrewing the case 2 from the base 1. It maybe as readily put together. All of the parts being made of metal, the valve as a complete article is not liable to deterioration, as when the thermostatic element is made of the usual mate rials as carbon, rubber, or any organic substance.

The valve seat 5 is usually formed upon a separate adjustable piece which is screwthreaded into the vhead a. Ne find that with our improved form of thermostatic element, the adjustable valve seat is unnecessary, since the range of movement of the valve 17 is such that until steam comes in contact with the members 16, the valve will remain unseated; but as steam enters the case 2, the expansion is very quickly effected, and the valve will be seated. This construction veryw materially simplifies the device and correspondingly reduces'cost of manu' facture'. V 7

We claim r 1. In a radiator air valve, the combination of a valve case having a valve seat therein,

a supporting base for said case, a foraminous tllellllOStittlC element connected with said stem below-said disk for positively unseating said valve upon a predeterminedfall of temperature.-

2. In a radiator air valve, the combina# tion of a valve case having aper-tured valve seatnt its upper end,a supporting base for said case,' a' disk secured between 1 said case and said base1,'a vertically sliding valve stem guided in a central aperture in said disk, and thermostatic elements secured to said stem rfle'spectively'above and below said disk, one ofsaid clementsbeing actuated by a rlseof temperature wltlnn said case to positively seat saidrv'a lveand the other element being actuated by a fall of tempera valve. I

3. A thermostaticvalve operating device,

comprising a valve and stem, a supportlngdisk through a central aperture in which said stem may slide in the direction of its length, a thermostatic element connected to stem passing through said aperture, two.

thermostatic elements respectively connected to said stem, and adapted to bear respectively upon opposite faces of said dislnone of said elements being actuated by rising temperature to positively move said stem in one direction and the other element being actu rated by a falling temperature to positively move said stem in the otherdirection.

connanrnusnn, ARTHUR c. nausea. 

